Amy Coney Barrett upholds mail ballot grace periods over Trump
On June 29, 2026, the Supreme Court ruled 5-4 that states may count mail-in ballots received after Election Day if postmarked by that day. Justice Amy Coney Barrett wrote the majority opinion in Watson v. RNC, upholding Mississippi's five-day grace period and sparing roughly 18 states from last-minute rule changes before the 2026 midterms.
The decision is the latest setback for President Donald Trump's wide-reaching campaign to reshape election rules. Trump has long blamed mail-in voting—without evidence—for his 2020 defeat and has pushed executive orders and legislation to restrict the practice.
Key Takeaways
- Justice Amy Coney Barrett joined Chief Justice John Roberts and the court's three liberals in a 5-4 ruling upholding Mississippi's mail-ballot receipt deadline.
- The court held that federal election-day statutes set when votes are cast, not when ballots must be received by officials.
- About 18 states with grace periods for late-arriving mail ballots avoid a scramble to rewrite rules months before the 2026 midterms.
- Trump called the ruling a "tremendous loss" and renewed demands for Congress to pass the SAVE America Act.
- Justice Samuel Alito dissented, joined by Justices Clarence Thomas, Neil Gorsuch, and Brett Kavanaugh.
What did the Supreme Court decide about mail-in ballots?
In Watson v. Republican National Committee, the court reversed a federal appeals court that had struck down Mississippi's law. The state permits absentee ballots postmarked by Election Day to be counted if they arrive within five business days afterward.
The Republican National Committee and Mississippi's Libertarian Party argued that 19th-century federal statutes establishing a uniform Election Day require ballots to be received—not merely postmarked—by that date. The Trump administration backed the challenge.
Barrett rejected that reading. "The election-day statutes say nothing about ballot receipt," she wrote, "and we cannot add to the words Congress chose." She added that if Congress wants a national standard for when ballots must arrive, lawmakers must pass one.
Why does Amy Coney Barrett's vote matter so much?
Barrett is a Trump appointee, making her role as opinion author politically significant. Conservatives blasted the ruling online, but Barrett framed the question narrowly: whether federal law preempts Mississippi's grace period, not whether mail voting itself is wise.
She acknowledged concerns about the appearance of fraud but said fixes must come from Congress or state legislatures. Election officials in states including California, Illinois, Nevada, and New York expressed relief, according to The New York Times.
As debates over voting infrastructure and election technology intensify, similar questions about how digital systems intersect with democratic safeguards appear in our Future Tech & AI Wonders coverage.
Will this ruling stop Trump's election crusade?
Almost certainly not. Trump labeled Monday's decision "very detrimental to honest elections" and urged Congress to pass the SAVE America Act, which would impose stricter voter ID rules and limit who may cast mail ballots.
The ruling followed other recent losses for Trump's election agenda, including a federal court striking down parts of a related executive order. Politico reported that Trump has used court defeats to rally support for sweeping federal legislation.
Barrett herself invited that fight. "If varied deadlines for ballot receipt similarly call for a national solution," she wrote, "the American people must choose it through their elected representatives." For now, states retain the power to set their own mail-ballot receipt deadlines—and Trump retains the power to keep campaigning against them.